Nicotinamide

ToxicologyAlso known as: NiacinamideAlso known as: Vitamin B3Also known as: Pyridine-3-carboxamideng/mL

Measures the blood level of nicotinamide (vitamin B3) in blood.

Normal Range
21.925 – 72.1
ng/mL
Abnormal Levels
< 5.2 ng/mL
> 72.1 ng/mL
Specimen Type
Blood

Why This Biomarker Matters

Nicotinamide deficiency can cause fatigue, neurological problems, and skin issues. Testing identifies deficiency in those with poor nutrition or genetic absorption disorders.

Optimal Ranges

Clinician-defined 4-point reference thresholds (ng/mL)

Default Range

5.2
21.925
38.65
72.1
Low
5.2 ng/mL
Borderline Low
21.925 ng/mL
Optimal
38.65 ng/mL
Borderline High
72.1 ng/mL

Overview

Nicotinamide, also known as niacinamide, is a form of vitamin B3 (niacin) essential for energy production, DNA repair, and cell signaling. Unlike nicotinic acid (the other form of B3), nicotinamide does not cause flushing. Your body obtains nicotinamide from foods like chicken, tuna, and mushrooms, or synthesizes it from tryptophan. Low levels are rare in developed countries but can occur with severe malnutrition, certain medications, or genetic disorders affecting niacin metabolism. This test helps assess nutritional status and may be useful in evaluating fatigue or neurological symptoms.

Technical Information (LOINC Codes)

Standardized laboratory codes for this biomarker

56961-6Primary
Nicotinamide [Mass/volume] in Serum or Plasma
ng/mL
3852-1
Nicotinamide [Mass/volume] in Urine
ng/mL
17362-5
Nicotinamide [Presence] in Urine
25488-8
Nicotinamide [Moles/volume] in Serum or Plasma
nmol/mL
27339-1
Nicotinamide [Presence] in Blood
4349-7
Nicotinamide [Mass] of Dose
mg

Available Lab Tests

Order tests that measure this biomarker

Vitamin B3 (Niacin & Niacinamide)

$67.15
Results in 3-7 business days